TY  - BOOK
AU  - Gerring, John,
TI  -  Case study research: principles and practices 
SN  - 0521676568 (pbk.)
U1  - 001.432  22
PY  - 2007///
CY  - New York
PB  - Cambridge University Press
KW  - Social sciences
KW  -  Research
KW  - Case method
N1  - Includes bibliographical references and indexes
ER  -